How many calories must be removed from 4 g of water at 10°C to convert it into ice at 0°C?
A. 90 calories
B. 270 calories
C. 360 calories
D. 450 calories
E. 180 calories
Answer: C
Environmental & Atmospheric Sciences
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How many moles of oxygen are consumed during the complete combustion of one mole of methanol?
A) 1 B) 1.5 C) 2 D) 2.5
Environmental & Atmospheric Sciences
Which of the following is a weak electrolyte?
A) CO2 B) CH3COOH C) both a and b D) neither of them
Environmental & Atmospheric Sciences
The Spring Wheat producing region lies to the north of the Winter Wheat region
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences